Source/JavaScriptCore/runtime/IntlObjectInlines.h - WebKit - Git at Google

 /*
  * Copyright (C) 2016 Yusuke Suzuki <yusuke.suzuki@sslab.ics.keio.ac.jp>
  * Copyright (C) 2016 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */

 #pragma once

 #include "BuiltinNames.h"
 #include "IntlObject.h"
 #include "JSBoundFunction.h"
 #include "JSObject.h"
 #include "ObjectConstructor.h"
 #include <unicode/ucol.h>

 namespace JSC {

 template<typename StringType>
 static constexpr uint32_t computeTwoCharacters16Code(const StringType& string)
 {
     return static_cast<uint16_t>(string.characterAt(0)) | (static_cast<uint32_t>(static_cast<uint16_t>(string.characterAt(1))) << 16);
 }

 template<typename Predicate> String bestAvailableLocale(const String& locale, Predicate predicate)
 {
     // BestAvailableLocale (availableLocales, locale)
     // https://tc39.github.io/ecma402/#sec-bestavailablelocale

     String candidate = locale;
     while (!candidate.isEmpty()) {
         if (predicate(candidate))
             return candidate;

         size_t pos = candidate.reverseFind('-');
         if (pos == notFound)
             return String();

         if (pos >= 2 && candidate[pos - 2] == '-')
             pos -= 2;

         candidate = candidate.substring(0, pos);
     }

     return String();
 }

 template<typename Constructor, typename Factory>
 JSValue constructIntlInstanceWithWorkaroundForLegacyIntlConstructor(JSGlobalObject* globalObject, JSValue thisValue, Constructor* callee, Factory factory)
 {
     // FIXME: Workaround to provide compatibility with ECMA-402 1.0 call/apply patterns.
     // https://bugs.webkit.org/show_bug.cgi?id=153679
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     auto* instance = factory(vm);
     RETURN_IF_EXCEPTION(scope, JSValue());

     if (thisValue.isObject()) {
         JSObject* thisObject = asObject(thisValue);
         ASSERT(!callee->template inherits<JSBoundFunction>(vm));
         JSValue prototype = callee->getDirect(vm, vm.propertyNames->prototype); // Passed constructors always have `prototype` which cannot be deleted.
         ASSERT(prototype);
         bool hasInstance = JSObject::defaultHasInstance(globalObject, thisObject, prototype);
         RETURN_IF_EXCEPTION(scope, JSValue());
         if (hasInstance) {
             PropertyDescriptor descriptor(instance, PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum | PropertyAttribute::DontDelete);
             scope.release();
             thisObject->methodTable(vm)->defineOwnProperty(thisObject, globalObject, vm.propertyNames->builtinNames().intlLegacyConstructedSymbol(), descriptor, true);
             return thisObject;
         }
     }
     return instance;
 }

 template<typename InstanceType>
 InstanceType* unwrapForLegacyIntlConstructor(JSGlobalObject* globalObject, JSValue thisValue, JSObject* constructor)
 {
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     JSObject* thisObject = jsDynamicCast<JSObject*>(vm, thisValue);
     if (UNLIKELY(!thisObject))
         return nullptr;

     auto* instance = jsDynamicCast<InstanceType*>(vm, thisObject);
     if (LIKELY(instance))
         return instance;

     ASSERT(!constructor->template inherits<JSBoundFunction>(vm));
     JSValue prototype = constructor->getDirect(vm, vm.propertyNames->prototype); // Passed constructors always have `prototype` which cannot be deleted.
     ASSERT(prototype);
     bool hasInstance = JSObject::defaultHasInstance(globalObject, thisObject, prototype);
     RETURN_IF_EXCEPTION(scope, nullptr);
     if (!hasInstance)
         return nullptr;

     JSValue value = thisObject->get(globalObject, vm.propertyNames->builtinNames().intlLegacyConstructedSymbol());
     RETURN_IF_EXCEPTION(scope, nullptr);
     return jsDynamicCast<InstanceType*>(vm, value);
 }

 template<typename ResultType>
 ResultType intlOption(JSGlobalObject* globalObject, JSObject* options, PropertyName property, std::initializer_list<std::pair<ASCIILiteral, ResultType>> values, ASCIILiteral notFoundMessage, ResultType fallback)
 {
     // GetOption (options, property, type="string", values, fallback)
     // https://tc39.github.io/ecma402/#sec-getoption

     ASSERT(values.size() > 0);

     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     if (!options)
         return fallback;

     JSValue value = options->get(globalObject, property);
     RETURN_IF_EXCEPTION(scope, { });

     if (!value.isUndefined()) {
         String stringValue = value.toWTFString(globalObject);
         RETURN_IF_EXCEPTION(scope, { });

         for (const auto& entry : values) {
             if (entry.first == stringValue)
                 return entry.second;
         }
         throwException(globalObject, scope, createRangeError(globalObject, notFoundMessage));
         return { };
     }

     return fallback;
 }

 template<typename ResultType>
 ResultType intlStringOrBooleanOption(JSGlobalObject* globalObject, JSObject* options, PropertyName property, ResultType trueValue, ResultType falsyValue, std::initializer_list<std::pair<ASCIILiteral, ResultType>> values, ASCIILiteral notFoundMessage, ResultType fallback)
 {
     // https://tc39.es/proposal-intl-numberformat-v3/out/negotiation/diff.html#sec-getstringorbooleanoption

     ASSERT(values.size() > 0);

     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     if (!options)
         return fallback;

     JSValue value = options->get(globalObject, property);
     RETURN_IF_EXCEPTION(scope, { });

     if (!value.isUndefined()) {
         if (value.isBoolean() && value.asBoolean())
             return trueValue;

         bool valueBoolean = value.toBoolean(globalObject);
         RETURN_IF_EXCEPTION(scope, { });

         if (!valueBoolean)
             return falsyValue;

         String stringValue = value.toWTFString(globalObject);
         RETURN_IF_EXCEPTION(scope, { });

         for (const auto& entry : values) {
             if (entry.first == stringValue)
                 return entry.second;
         }
         throwException(globalObject, scope, createRangeError(globalObject, notFoundMessage));
         return { };
     }

     return fallback;
 }

 ALWAYS_INLINE bool canUseASCIIUCADUCETComparison(UChar character)
 {
     return isASCII(character) && ducetLevel1Weights[character];
 }

 template<typename CharacterType1, typename CharacterType2>
 UCollationResult compareASCIIWithUCADUCETLevel3(const CharacterType1* characters1, const CharacterType2* characters2, unsigned length)
 {
     for (unsigned position = 0; position < length; ++position) {
         auto lhs = characters1[position];
         auto rhs = characters2[position];
         uint8_t leftWeight = ducetLevel3Weights[lhs];
         uint8_t rightWeight = ducetLevel3Weights[rhs];
         if (leftWeight == rightWeight)
             continue;
         return leftWeight > rightWeight ? UCOL_GREATER : UCOL_LESS;
     }
     return UCOL_EQUAL;
 }

 template<typename CharacterType1, typename CharacterType2>
 inline UCollationResult compareASCIIWithUCADUCET(const CharacterType1* characters1, unsigned length1, const CharacterType2* characters2, unsigned length2)
 {
     bool notSameCharacters = false;
     unsigned commonLength = std::min(length1, length2);
     for (unsigned position = 0; position < commonLength; ++position) {
         auto lhs = characters1[position];
         auto rhs = characters2[position];
         ASSERT(canUseASCIIUCADUCETComparison(lhs));
         ASSERT(canUseASCIIUCADUCETComparison(rhs));
         if (lhs == rhs)
             continue;
         notSameCharacters = true;
         uint8_t leftWeight = ducetLevel1Weights[lhs];
         uint8_t rightWeight = ducetLevel1Weights[rhs];
         if (leftWeight == rightWeight)
             continue;
         return leftWeight > rightWeight ? UCOL_GREATER : UCOL_LESS;
     }

     if (length1 == length2) {
         if (notSameCharacters)
             return compareASCIIWithUCADUCETLevel3(characters1, characters2, length1);
         return UCOL_EQUAL;
     }
     return length1 > length2 ? UCOL_GREATER : UCOL_LESS;
 }

 // https://tc39.es/ecma402/#sec-getoptionsobject
 inline JSObject* intlGetOptionsObject(JSGlobalObject* globalObject, JSValue options)
 {
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);
     if (options.isUndefined())
         return nullptr;
     if (LIKELY(options.isObject()))
         return asObject(options);
     throwTypeError(globalObject, scope, "options argument is not an object or undefined"_s);
     return nullptr;
 }

 // https://tc39.es/ecma402/#sec-coerceoptionstoobject
 inline JSObject* intlCoerceOptionsToObject(JSGlobalObject* globalObject, JSValue optionsValue)
 {
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);
     if (optionsValue.isUndefined())
         return nullptr;
     JSObject* options = optionsValue.toObject(globalObject);
     RETURN_IF_EXCEPTION(scope, nullptr);
     return options;
 }

 template<typename Container>
 JSArray* createArrayFromStringVector(JSGlobalObject* globalObject, const Container& elements)
 {
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     JSArray* result = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), elements.size());
     if (!result) {
         throwOutOfMemoryError(globalObject, scope);
         return nullptr;
     }
     for (unsigned index = 0; index < elements.size(); ++index) {
         result->putDirectIndex(globalObject, index, jsString(vm, elements[index]));
         RETURN_IF_EXCEPTION(scope, { });
     }
     return result;
 }

 template<typename Container>
 JSArray* createArrayFromIntVector(JSGlobalObject* globalObject, const Container& elements)
 {
     VM& vm = globalObject->vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     JSArray* result = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), elements.size());
     if (!result) {
         throwOutOfMemoryError(globalObject, scope);
         return nullptr;
     }
     for (unsigned index = 0; index < elements.size(); ++index) {
         result->putDirectIndex(globalObject, index, jsNumber(elements[index]));
         RETURN_IF_EXCEPTION(scope, { });
     }
     return result;
 }

 } // namespace JSC
	/*
	* Copyright (C) 2016 Yusuke Suzuki <yusuke.suzuki@sslab.ics.keio.ac.jp>
	* Copyright (C) 2016 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#pragma once

	#include "BuiltinNames.h"
	#include "IntlObject.h"
	#include "JSBoundFunction.h"
	#include "JSObject.h"
	#include "ObjectConstructor.h"
	#include <unicode/ucol.h>

	namespace JSC {

	template<typename StringType>
	static constexpr uint32_t computeTwoCharacters16Code(const StringType& string)
	{
	return static_cast<uint16_t>(string.characterAt(0)) \| (static_cast<uint32_t>(static_cast<uint16_t>(string.characterAt(1))) << 16);
	}

	template<typename Predicate> String bestAvailableLocale(const String& locale, Predicate predicate)
	{
	// BestAvailableLocale (availableLocales, locale)
	// https://tc39.github.io/ecma402/#sec-bestavailablelocale

	String candidate = locale;
	while (!candidate.isEmpty()) {
	if (predicate(candidate))
	return candidate;

	size_t pos = candidate.reverseFind('-');
	if (pos == notFound)
	return String();

	if (pos >= 2 && candidate[pos - 2] == '-')
	pos -= 2;

	candidate = candidate.substring(0, pos);
	}

	return String();
	}

	template<typename Constructor, typename Factory>
	JSValue constructIntlInstanceWithWorkaroundForLegacyIntlConstructor(JSGlobalObject* globalObject, JSValue thisValue, Constructor* callee, Factory factory)
	{
	// FIXME: Workaround to provide compatibility with ECMA-402 1.0 call/apply patterns.
	// https://bugs.webkit.org/show_bug.cgi?id=153679
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	auto* instance = factory(vm);
	RETURN_IF_EXCEPTION(scope, JSValue());

	if (thisValue.isObject()) {
	JSObject* thisObject = asObject(thisValue);
	ASSERT(!callee->template inherits<JSBoundFunction>(vm));
	JSValue prototype = callee->getDirect(vm, vm.propertyNames->prototype); // Passed constructors always have `prototype` which cannot be deleted.
	ASSERT(prototype);
	bool hasInstance = JSObject::defaultHasInstance(globalObject, thisObject, prototype);
	RETURN_IF_EXCEPTION(scope, JSValue());
	if (hasInstance) {
	PropertyDescriptor descriptor(instance, PropertyAttribute::ReadOnly \| PropertyAttribute::DontEnum \| PropertyAttribute::DontDelete);
	scope.release();
	thisObject->methodTable(vm)->defineOwnProperty(thisObject, globalObject, vm.propertyNames->builtinNames().intlLegacyConstructedSymbol(), descriptor, true);
	return thisObject;
	}
	}
	return instance;
	}

	template<typename InstanceType>
	InstanceType* unwrapForLegacyIntlConstructor(JSGlobalObject* globalObject, JSValue thisValue, JSObject* constructor)
	{
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	JSObject* thisObject = jsDynamicCast<JSObject*>(vm, thisValue);
	if (UNLIKELY(!thisObject))
	return nullptr;

	auto* instance = jsDynamicCast<InstanceType*>(vm, thisObject);
	if (LIKELY(instance))
	return instance;

	ASSERT(!constructor->template inherits<JSBoundFunction>(vm));
	JSValue prototype = constructor->getDirect(vm, vm.propertyNames->prototype); // Passed constructors always have `prototype` which cannot be deleted.
	ASSERT(prototype);
	bool hasInstance = JSObject::defaultHasInstance(globalObject, thisObject, prototype);
	RETURN_IF_EXCEPTION(scope, nullptr);
	if (!hasInstance)
	return nullptr;

	JSValue value = thisObject->get(globalObject, vm.propertyNames->builtinNames().intlLegacyConstructedSymbol());
	RETURN_IF_EXCEPTION(scope, nullptr);
	return jsDynamicCast<InstanceType*>(vm, value);
	}

	template<typename ResultType>
	ResultType intlOption(JSGlobalObject* globalObject, JSObject* options, PropertyName property, std::initializer_list<std::pair<ASCIILiteral, ResultType>> values, ASCIILiteral notFoundMessage, ResultType fallback)
	{
	// GetOption (options, property, type="string", values, fallback)
	// https://tc39.github.io/ecma402/#sec-getoption

	ASSERT(values.size() > 0);

	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	if (!options)
	return fallback;

	JSValue value = options->get(globalObject, property);
	RETURN_IF_EXCEPTION(scope, { });

	if (!value.isUndefined()) {
	String stringValue = value.toWTFString(globalObject);
	RETURN_IF_EXCEPTION(scope, { });

	for (const auto& entry : values) {
	if (entry.first == stringValue)
	return entry.second;
	}
	throwException(globalObject, scope, createRangeError(globalObject, notFoundMessage));
	return { };
	}

	return fallback;
	}

	template<typename ResultType>
	ResultType intlStringOrBooleanOption(JSGlobalObject* globalObject, JSObject* options, PropertyName property, ResultType trueValue, ResultType falsyValue, std::initializer_list<std::pair<ASCIILiteral, ResultType>> values, ASCIILiteral notFoundMessage, ResultType fallback)
	{
	// https://tc39.es/proposal-intl-numberformat-v3/out/negotiation/diff.html#sec-getstringorbooleanoption

	ASSERT(values.size() > 0);

	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	if (!options)
	return fallback;

	JSValue value = options->get(globalObject, property);
	RETURN_IF_EXCEPTION(scope, { });

	if (!value.isUndefined()) {
	if (value.isBoolean() && value.asBoolean())
	return trueValue;

	bool valueBoolean = value.toBoolean(globalObject);
	RETURN_IF_EXCEPTION(scope, { });

	if (!valueBoolean)
	return falsyValue;

	String stringValue = value.toWTFString(globalObject);
	RETURN_IF_EXCEPTION(scope, { });

	for (const auto& entry : values) {
	if (entry.first == stringValue)
	return entry.second;
	}
	throwException(globalObject, scope, createRangeError(globalObject, notFoundMessage));
	return { };
	}

	return fallback;
	}

	ALWAYS_INLINE bool canUseASCIIUCADUCETComparison(UChar character)
	{
	return isASCII(character) && ducetLevel1Weights[character];
	}

	template<typename CharacterType1, typename CharacterType2>
	UCollationResult compareASCIIWithUCADUCETLevel3(const CharacterType1* characters1, const CharacterType2* characters2, unsigned length)
	{
	for (unsigned position = 0; position < length; ++position) {
	auto lhs = characters1[position];
	auto rhs = characters2[position];
	uint8_t leftWeight = ducetLevel3Weights[lhs];
	uint8_t rightWeight = ducetLevel3Weights[rhs];
	if (leftWeight == rightWeight)
	continue;
	return leftWeight > rightWeight ? UCOL_GREATER : UCOL_LESS;
	}
	return UCOL_EQUAL;
	}

	template<typename CharacterType1, typename CharacterType2>
	inline UCollationResult compareASCIIWithUCADUCET(const CharacterType1* characters1, unsigned length1, const CharacterType2* characters2, unsigned length2)
	{
	bool notSameCharacters = false;
	unsigned commonLength = std::min(length1, length2);
	for (unsigned position = 0; position < commonLength; ++position) {
	auto lhs = characters1[position];
	auto rhs = characters2[position];
	ASSERT(canUseASCIIUCADUCETComparison(lhs));
	ASSERT(canUseASCIIUCADUCETComparison(rhs));
	if (lhs == rhs)
	continue;
	notSameCharacters = true;
	uint8_t leftWeight = ducetLevel1Weights[lhs];
	uint8_t rightWeight = ducetLevel1Weights[rhs];
	if (leftWeight == rightWeight)
	continue;
	return leftWeight > rightWeight ? UCOL_GREATER : UCOL_LESS;
	}

	if (length1 == length2) {
	if (notSameCharacters)
	return compareASCIIWithUCADUCETLevel3(characters1, characters2, length1);
	return UCOL_EQUAL;
	}
	return length1 > length2 ? UCOL_GREATER : UCOL_LESS;
	}

	// https://tc39.es/ecma402/#sec-getoptionsobject
	inline JSObject* intlGetOptionsObject(JSGlobalObject* globalObject, JSValue options)
	{
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);
	if (options.isUndefined())
	return nullptr;
	if (LIKELY(options.isObject()))
	return asObject(options);
	throwTypeError(globalObject, scope, "options argument is not an object or undefined"_s);
	return nullptr;
	}

	// https://tc39.es/ecma402/#sec-coerceoptionstoobject
	inline JSObject* intlCoerceOptionsToObject(JSGlobalObject* globalObject, JSValue optionsValue)
	{
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);
	if (optionsValue.isUndefined())
	return nullptr;
	JSObject* options = optionsValue.toObject(globalObject);
	RETURN_IF_EXCEPTION(scope, nullptr);
	return options;
	}

	template<typename Container>
	JSArray* createArrayFromStringVector(JSGlobalObject* globalObject, const Container& elements)
	{
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	JSArray* result = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), elements.size());
	if (!result) {
	throwOutOfMemoryError(globalObject, scope);
	return nullptr;
	}
	for (unsigned index = 0; index < elements.size(); ++index) {
	result->putDirectIndex(globalObject, index, jsString(vm, elements[index]));
	RETURN_IF_EXCEPTION(scope, { });
	}
	return result;
	}

	template<typename Container>
	JSArray* createArrayFromIntVector(JSGlobalObject* globalObject, const Container& elements)
	{
	VM& vm = globalObject->vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	JSArray* result = JSArray::tryCreate(vm, globalObject->arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous), elements.size());
	if (!result) {
	throwOutOfMemoryError(globalObject, scope);
	return nullptr;
	}
	for (unsigned index = 0; index < elements.size(); ++index) {
	result->putDirectIndex(globalObject, index, jsNumber(elements[index]));
	RETURN_IF_EXCEPTION(scope, { });
	}
	return result;
	}

	} // namespace JSC